Walk Your Way to Good Health
Heat Exhaustion and Heatstroke: What You Need To Know
What causes heat exhaustion and heatstroke?
Heat-related illnesses, such as heat exhaustion and heatstroke, occur when your body can't keep itself cool. As the air temperature rises, your body stays cool when your sweat evaporates. On hot, humid days, the increased moisture in the air slows the evaporation of sweat. When sweating isn't enough to cool your body, your body temperature rises, and you may become ill.
What is heat exhaustion?
Heat exhaustion happens when your body gets too hot. It can be caused by exercise or hot weather. You may feel weak, dizzy or worried. You also may have a headache or a fast heartbeat. You may get dehydrated and have very little urine.
What should I do if I think I have heat exhaustion?
If you think you have heat exhaustion, get out of the heat quickly. Rest in a cool, shady place. Drink plenty of water or other fluids. Do NOT drink alcohol. Alcohol can make heat exhaustion worse. If you do not feel better within 30 minutes, you should contact your doctor. If heat exhaustion is not treated, it can progress to heatstroke.
What is heatstroke?
Heatstroke can happen when your body gets too hot, or it can happen after heat exhaustion. Heatstroke is much more serious than heat exhaustion. Heatstroke can kill you. People with heatstroke may seem confused. They may have seizures or go into a coma. Most people with heatstroke also have a fever.
What should I do if I think someone has heatstroke?
If you think someone might have heatstroke, you should take him or her to a cool, shady place quickly, and call a doctor. Removing the person's unnecessary clothing can help cool him or her down. Try to fan warm air over the person while wetting the skin with lukewarm water. This will help the person cool down.
What should I do after having heat exhaustion or heatstroke?
Having heat exhaustion or heatstroke makes you more sensitive to hot conditions for about a week afterwards. Be especially careful not to exercise too hard, and avoid hot weather. Ask your doctor to tell you when it is safe to return to your normal activities.
Source: American Academy of Family Physicians
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